SN74SSTU32866AZKER

Specialty Logic Overview

The SN74SSTU32866AZKER is a Widebus+ registered buffer designed for 1.7-V to 1.9-V VCC operation. It supports SSTL_18 data inputs and differential clock inputs. The device is configurable as a 25-bit 1:1 or 14-bit 1:2 registered buffer. It features chip-select inputs that gate data outputs to minimize system power consumption. Output edge-control circuitry minimizes switching noise in unterminated lines. The component checks parity on DIMM-independent data inputs and includes an open-drain error output.

Specialty Logic Feature Summary

• Configurable pinout allows selection between 25-bit 1:1 and 14-bit 1:2 register modes via hard-wired control inputs.
• Integrated parity checking logic monitors DIMM-independent data inputs and signals errors through an open-drain output.
• Edge-controlled output circuitry optimizes performance for unterminated DIMM loads while reducing switching noise.
• Supports low-power standby and active modes using system chip select inputs to gate output state changes.

Specialty Logic Applications

• DDR2 Registered Dual In-line Memory Module (RDIMM) designs
• System memory controller interface buffering
• High-speed data bus registration with parity verification

Specialty Logic Procurement Notes

Verify the specific ordering suffix AZKER corresponds to the LFBGA package and tape-and-reel shipping configuration. Confirm the operating temperature range matches the 0°C to 70°C specification required for the target application environment. Ensure the voltage supply requirements align with the 1.7-V to 1.9-V operational limits defined in the datasheet.

Specialty Logic Selection Notes

Select this component when designing DDR2 RDIMM circuits requiring configurable bus width registration. The device is suitable for applications needing integrated parity error detection and low-power standby capabilities. Consider the ZKE package constraints and the requirement for differential clock inputs when evaluating board layout and signal integrity requirements.

Specialty Logic Part Context

This part belongs to Texas Instruments' Widebus+ family, which focuses on optimizing PCB layout for memory applications. The SN74SSTU32866A variant specifically addresses the needs of DDR2 memory systems by providing flexible bit-width configurations and robust error handling features within a single integrated circuit package.

Specialty Logic Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.